I work at company that manufactures wheelchairs. I talked to several guys who have Spinergy wheels on their wheelchairs and they said nothing but good things about their durability.

After riding these rims fairly hard for a few months I'm very happy. They're much lighter then the Mavics that came with my bike and I feel much better about my chances of getting back to the trailhead when riding with these wheels.

These wheels are awesome. I run them on my Salsa race set up. They have been through a full year of 16 races and have had not one problem with them. Have not needed to true them yet. I run Stans No Tubes in them and I think I have one of the lightest wheelsets on the race seen. I love the fact they are easy to take apart and clean. Parts are easy to get even though I have not needed to. Best wheels if you are still running V-brakes. If you want light weight strong race wheels for less money than most high end race wheels these are the ones.